baber/WOPTO huggingface dataset:
Patent GB-1234217-A (GB)
IPC: H03K4/62
Filed: 1968-06-06
Abstract: 1,234,217. Transistor sawtooth circuit. SIEMENS A.G. 6 June, 1968 [7 June, 1967; 25 July, 1967], No. 26900/68. Heading H3T. In a line deflection stage, e.g. for a television receiver, a parallel resonant circuit LC is connected across the line output transistor T 10 , a reverse diode D shunted across the output transistor and the supply voltage U G  is connected only during the beginning of each flyback period when the output transistor T 10  is blocked. This arrangement minimizes the voltage across the output transistor T 10 . As described, each flyback is initiated by a positive synchronizing pulse fed to winding L 50  and coupled to the base of transistor T 10  via winding L 30 . The switching transistor T 20  becomes turned on when the oscillatory current through L 10  and C L  has reached a predetermined value, thus connecting the supply U G  which supplies energy to the parallel circuit LC. The forward sweep is initiated by a negative synchronizing pulse fed to L 50  which blocks switching transistor T 20  so that the collector voltage decreases until diode D becomes conductive, initiating a forward sweep. Inductor L may be the deflection coil; capacitor C s  providing S-correction. In Fig. 3 (not shown), capacitor C is connected between the collector and the junction of a pair of series connected transistors arranged to be conductive alternately under control of transformer-coupled synchronizing pulses. In Fig. 1 (not shown), the transformers L 10 , L 30  . . .  L 50  are omitted, the supply being switched in to the collectors via a current limiting resistor, inductor or harmonic-tuned circuit.
Patent GB-1238498-A (GB)
IPC: C21C5/34
Filed: 1968-11-27
Abstract: 1,238,498. Treating molten metal. BADISCHE ANILIN & SODA-FABRIK A. G. Nov.27, 1968 [Nov.28, 1967], No.56223/68. Heading C7D. After molten metal has been blown with air, an inert gas is passed in fine dispersion upwardly through the melt. The process may be carried out in a converter which is at least partly lined with refractory, gas-permeable bricks, through which air is blown into the molten metal, and after this, inert gas is blown into the melt upwardly as a fine dispersion. The molten metal may be pig iron, and the inert gas argon. The process is accelerated by alternately blowing air and inert gas more than once each. The inert gas may contain a gas to react with the molten metal e.g. CO, or powered material e.g. alloying metals, dephasphorizing or slagging agents.
Patent GB-1239525-A (GB)
IPC: A63B61/02
Filed: 1969-07-18
Abstract: 1,239,525. Tennis post. ATHLETIC EQUIPMENT MFG. CO. Ltd. 1 April, 1970 [18 July, 1969], No. 36352/69. Heading A6D. A tennis post has built into it a tensioning device for the horizontal supporting rope of a tennis net. In the figure, sheave 11 is rotatably mounted at the top of the post so that the rope 6 passes over the sheave and extends vertically into the post to be anchored at 19 to anchor 18 attached to non-rotatable nut 17 which engages the screw-threaded spindle 12 and slides up and down the post when the spindle 12 is rotated by means of handle 3, thus relieving or applying tension to the rope; The handle 3 may be pivoted to lie within the post, protected by lid 2, when not in use.
Patent GB-1250298-A (GB)
IPC: B22D27/06
Filed: 1970-09-15
Abstract: 1,250,298. Casting processes. FOSECO INTERNATIONAL Ltd. 28 Jan., 1971 [15 Sept., 1970], No. 43950/70. Heading B3F. A method of treating ingots of killed steel comprises introducing bismuth into the molten steel after teeming has ceased. The bismuth can be introduced as Bi-impregnated sponge iron. Immediately after the bismuth addition, the ingot is capped, e.g. by placing a cast iron plate on its upper surface. The capping plate can be further cooled by spraying with cold water. In the example, 208 gm. blocks of Bi were added to moulds for 5 ton ingots.
Patent GB-1251466-A (GB)
IPC: B29C43/12
Filed: 1970-08-11
Abstract: 1,251,466. Moulding sheet articles. SHELL INTERNATIONALE RESEARCH MAATSHAPPIJ N.V. 11 Aug., 1970 [13 Aug., 1969], No. 38597/70. Heading B5A. An apparatus for forming articles, from a sheet W, comprises a die 12, inner and outer diaphragms 18, 19, a liquid and/or gas connection 22 for pressure fluid to force the sheet into the mould, and a gas connection 25 to pass fluid between the diaphragms to force back the diaphragm 19, and lift the diaphragm 18 off the article, via a passage (26) and flap (27), Fig. 4 (not shown). The article is ejected from themould by fluid in a passage 28 controlled by a poppet valve 29. The pressure can be applied to the outer diaphragm 19 by lowering the press.
Patent GB-1252764-A (GB)
IPC: D01D10/04
Filed: 1968-06-04
Abstract: 1,252,764. Filament stretching and heating apparatus. T.M.M. (RESEARCH) Ltd. 30 May, 1969 [4 June, 1968], No. 26474/68. Heading B5B] Synthetic filament processing apparatus comprises first and second filament advancing means between which the filaments are drawn by operating the second advancing means at a greater filament advancing speed than the first advancing means, one or each of the advancing means comprising a pair of positively driven rollers around which the filaments pass in loops and a heater positioned between the rollers and contacted by at least some of the filament loops. In Fig. 1, the undrawn filaments 11 are first taken round driven feed rollers 1 and 2, also contacting a shoe type heater 3 between the two rollers. The filaments are then drawn over an additional heating plate 4 and are taken round driven draw rollers 5 and 6, also contacting a shoe type heater 7. Preferably, the feed rollers 1 and 2 are cylindrical, and the draw rollers 5 and 6 each have a tapered portion 9 to allow relaxation of the filaments. The draw rollers 5 and 6 may alternatively be cylindrical or stepped. The roller axes of each pair are inclined, and the rollers of each pair are driven from a single drive shaft by means of belts and pulleys (Fig. 4, not shown). After heating the filaments with heater 7, cooling may be effected by. (i) making rollers 5 and 6 longer than the heater 7 so that the filaments move out of contact with the heater, or (ii) passing the filaments round a pair of unheated rollers. The feed and draw rollers may be spaced from the heaters, and heat insulation may be applied to the ends of the heaters. Exemplified materials are polyester and nylon 6À6.
Patent GB-1264140-A (GB)
IPC: B62D5/097
Filed: 1969-05-05
Abstract: 1,264,140. Hydrostatic steering mechanism. DANFOSS AS. 5 May, 1969 [3 May, 1968], No. 22801/69. Heading B7H. Hydrostatic steering mechanism comprises a steering motor 2 which is part of a secondary hydrostatic system including a control unit 13 actuated by the motor 6 of a primary system having a control unit 5 actuated by a steering wheel 1. Each control unit 5, 13 includes a control valve and a metering device. The motor 6 may be a rotary motor; and the systems preferably incorporate step-up means which increase the amount of fluid passed to the steering motor 2 for each revolution of the steering wheel 1. Such means may be an hydraulic amplifier in the primary hydrostatic system or a mechanical step-up gear on the input side of the metering device of the secondary control unit 13. The metering device of the secondary control unit 13 may be an orbital gear pump having a displacement per revolution equal to the total volume of the displacement chambers therein multiplied by the number of gear teeth, or the metering devices in both control units 5, 13 may be rotary piston pumps with volume step-up means. Separate feed pumps 4, 14 feed the two hydrostatic systems from a common reservoir 21. One-way valves 24, 25 connect the first system to the second so that the steering motor 2 can be operated from the primary control unit 5 should the feed pump 14 be inoperative, a oneway valve 26 preventing reverse flow through the inoperative pump. If the feed pump 4 is inoperative the motor 6 is operable by manual actuation of the metering device in the primary control unit 5. Fig. 2 shows a unitary assembly 20 incorporating the primary motor 6 and the secondary control unit 13. The motor 6 comprises a rotatable eccentric ring gear 29 and a gear 28 mounted on a shaft 27. The metering device of the control unit 13 comprises an orbital gear 38 and a fixed gear ring 40, and the control valve comprises inner and outer rotatable valve sleeves 45, 46. The inner valve sleeve 46 is coupled to the shaft 27 by a pin 47, and the outer valve sleeve 45 drives the orbital gear 38 through a pin 48 and a wobble shaft 49. The-pin 48 engages a larger bore 51 in the inner valve sleeve 46 so that the sleeves are coupled with provision for limited relative rotation, and spring means 50 urge the sleeves into a predetermined neutral position. Ports 57, 58 in the outer valve sleeve 45 co-operate with grooves 63, 64 in the inner valve sleeve 46 to control fluid flow to the steering motor 2, and bores 59 in the outer valve sleeve 45 co-operate with grooves 65 in the inner sleeve 46 to circulate the fluid in the appropriate direction through the metering device 38, 39.
Patent GB-1264837-A (GB)
IPC: F23R3/00
Filed: 1969-04-16
Abstract: 1,264,837. Heating fluids; steam generators. STEIN INDUSTRIE. 16 April, 1969 [16 April, 1968], No. 19445/69. Headings. F4A, F4G, F4K and F4S. In apparatus for continuous heat exchange between two fluids, e.g. combustion products from a burner and air, or a hot gas and a liquid, the hot gas is passed axially from one end 2 to the other end 3 of an enclosure 1 and the fluid to be heated enters tangentially into the enclosure at an inlet 5 to flow helically around the hot gas with sufficient velocity to maintain it adjacent the wall of the enclosure and out of contact with the hot gas. As shown, the hot gas comprises the combustion products of liquid or gaseous fuel from an inlet 4 and the air to be heated enters the enclosure after passage along a jacket 10 concentrically mounted about the wall of refractory material having helical vanes 8. The flows may be countercurrent within the enclosure. Heat exchange is effected by heat conduction and convection from the internal surface of the enclosure which is heated by radiant heat from the hot gas. The two fluids may be utilized for feeding two gas turbines (Fig. 2) or the heat exchanger may heat boiler superheaters or other high temperature exchangers (Fig. 3). In a further embodiment, particulate material be dried may be introduced into the gas stream to be heated and the combustion products are used to drive a turbine which provides the power to convey the particulate material.
Patent GB-1265040-A (GB)
IPC: C01D/
Filed: 1969-12-15
Abstract: 1,265,040. Dentifrices. COLGATE-PALMOLIVE CO. 15 Dec., 1969 [20 Dec., 1968; 19 Nov., 1969], No. 61033/69. Heading A5B. Dentifrice compositions comprise a watersoluble monofluorophosphate and a water-insoluble compatible polishing agent comprising a mixture of an alkaline earth metal carbonate and one or more agents selected from alkali metal metaphosphates, alumina and mixtures thereof, the weight ratio of carbonate to metaphosphate (if present) being in the range 3:1 to 1000:1 and that of carbonate to alumina (if present) being from 1:3 to 100:1. Conventional additives (e.g. gelling agents, humectants and detergents) may also be present. Compositions not containing alumina are stated to be capable of being packed in unlined aluminium containers.
Patent GB-1265228-A (GB)
IPC: E04B2/74
Filed: 1969-12-23
Abstract: 1,265,228. Partitions. UNITED PLASTICS Ltd. 23 Dec., 1969, No. 62728/69. Headings E1W and E2B. Partition panels are interconnected in edgeto-edge relationship by pairs of clips 9 extending between the free side edges of plates 6 and 7 fastened to frame members 1 with rebated edges. Lugs 7 on the plates provide stops, and the upper portion 8 of each side edge is tapered. Trap filler strips 10 are also provided. Each panel has a wooden or metal frame 1, facing sheets 4 and a foamed polyurethane core.
Patent GB-1265331-A (GB)
IPC: H01H21/02
Filed: 1969-02-07
Abstract: 1,265,331. Radio receivers and transmitters. AGA A.B. 7 Feb., 1969 [7 March, 1968], No. 6689/69. Headings H3Q and H4L. A selective switching device comprises a plurality of manually operable switching members A, B, C, D operatively connected with primary circuit elements A1-D1, A2-D2, secondary circuit elements 1-16 selectively connected in circuit with the primary circuit elements by activation of a plurality of photocells P1-P4, an adjustable member AM for activating selected ones of the photo-cells, and a displaceable apertured screen member including a tape SM interposed between a light source LS and the photo-cells and connected with the adjustable member AM so as to be displaceable in response to the adjustable member. As shown, the device is used to select different wavebands in a radio transmitter-receiver of an aircraft. When a pilot approaches a certain airport he selects that airport by turning knob AM until the name of that air-port is seen in window DM. This rotation of knob AM moves the tape SM into position so that the apertures (AP, Fig. 3, not shown), corresponding to this airport are positioned between the lamp LS and the photo-cells P1-P4. There is a photo-cell connected between each crossing point of the primary and secondary circuits A1-D1, 1-16, so that the photo-cells which are energized through the apertures in the tape connect certain of the primary and secondary conductors to select the required waveband. It is arranged that by pressing push-button A the transmitter receiver is prepared to communicate with the control tower of airport A. If it is required to communicate with the control tower of another airport B then this airport is selected in window DM by rotating knob AM, this selects a different aperture arrangement on the tape SM and the push-button A is pressed. Similarly pushbutton B will operate the transmitter receiver differently depending on the aperture arrangement, i.e. airport selected.
Patent GB-1266160-A (GB)
IPC: H01H85/54
Filed: 1968-11-08
Abstract: 1,266,160. Fusible cut-outs. C. B. BOONE. 27 May, 1969 [8 Nov., 1968], No. 53085/68. Heading H2G. Fuse holders have the circuit wires secured and connected through conductive plate members 32 (Fig. 4) or fuse receiving clips 78 (Fig. 10) by resilient tongue portions 34, 34<SP>1</SP>, 35, 351, which grip the bare wires. In the holder shown in Fig. 10 the cartridge fuse is held through receiving clips 78, shims 84 being provided to prevent end movement if the fuse used is a short one. Adjacent holders may be secured together by electronic welding of external ribs (92, Fig. 11, not shown) on their casings. In another embodiment a fuse holder has top and bottom halves which, when clipped together, hold conductive members 30, 60 (Fig. 9) which grip the bare wire ends of conductors 36, 36<SP>1</SP>, 64 through spring tongues, the enclosed spring pressed cartridge fuse having one end cap in a trough-like extension of member 60 and the other in a conductive ferrule which fits into an aperture in the conductive plate 30, the ferrule being held by a knob 46. For a longer fuse a different ferrule is used.
Patent GB-1266671-A (GB)
IPC: B65G67/60
Filed: 1970-02-11
Abstract: 1,266,671. Spray producers. MARCONA CORP. 11 Feb., 1970 [23 May, 1969; 10 July, 1969], No. 6544/70. Heading B2F. [Also in Division B8] Slurrifiable material is unloaded from a ship or storage container in which it has become solidified by pulping or re-slurrifing by jets of water traversable over the bottom of the material from the region of a sump from which the resultant slurry is simultaneously removed. The inner bottom of a ships hold or a container is provided with one or more sumps 116, Fig. 13, through the centre of which extends a vertically adjustable hollow shaft 203 closed by an end plate 210 to form a recess 280 provided with nozzles to produce the water jets upon connection to a high pressure water supply 208. The shaft 203 is rotated stepwise to traverse the jets around the sump by a linear actuator 227, Fig. 15, acting through a pawl and ratchet, which comprises a housing 241 having a piston 242, and an actuator passage 257 controlled by a spool valve 250 which is reversed by an arm 262 on a piston rod 243 engaging stops 263, 264 on the actuating rod 261 of the valve which is caused to snap over when reversing by springs passing over dead centre. The nozzles 285, 286, Fig. 19, are provided in a sleeve portion 281 of a piston 282 urged by a spring to be displaced to close the nozzles which are opened when water pressure raises the piston to align the nozzles with openings 354, 355 in the shaft 203. Each sump 166 may have fixed flushing nozzles such as 157, 158, Fig. 10 and distribution manifolds 160, 162 which are rotatable. Each nozzle, Fig. 21, may comprise a shell 179 and a plunger 180 attached to a piston 182 biased closed by a spring which is overcome by water pressure. As shown in Fig. 12 the height of the shaft 203 is remotely controlled by a piston and cylinder device 145, 149 actuated by a reversing valve. In another embodiment the shaft 203 is continuously rotated by a hydraulic motor.
Patent GB-1267255-A (GB)
IPC: G03G17/04
Filed: 1969-08-18
Abstract: 1,267,255. Photo-electrophoretic imaging. XEROX CORP. Aug. 18, 1969 [Aug.20, 1968], No.41047/69. Heading G2H. In a photo-electrophoretic imaging process, wherein a suspension 4 of electrically photosensitive particles is imaged while being subjected to a field between an injecting electrode 1 and a blocking electrode 5, the electrode 5 comprises a conductive roller 11 having a photo-conductive layer 12 which is exposed to a lamp 14 after an imaging cycle to disperse charge on electrode 5 which would cause image deterioration in the next cycle. Electrode 5 may be cleaned with solvent prior to exposure to lamp 14. Lamp 14 may be mounted inside the blocking electrode. The blocking electrode may alternatively comprise a flat plate or a belt entrained over rollers. The photo-conductor 12 is preferably such that cleaning lamp 14 emits different light, e.g. ultraviolet, from imaging lamp 8. Instead of using a potential source 6, electrode 5 may be charged before each imaging cycle and electrode 1 earthed.
Patent GB-1289840-A (GB)
IPC: H01L21/00
Filed: 1969-12-15
Abstract: 1289840 Handling semi-conductor devices TELEDYNE Inc 15 Dec 1969 [19 Dec 1968] 40682/71 Divided out of 1289837 Heading H1K [Also in Division B8] The subject-matter of the Specification is included in the Specification 1,289,837, but the claims relate to apparatus for handling a flexible tape 140 having sprocket holes 142 along one margin and spaced openings 144 in which are situated semi-conductor devices 100 stuck to an adhesive web 146 bonded to one side of the tape 140. The apparatus includes guide surfaces 158, 160 which direct the intermittently advanced tape 140 from a supply reel 148 to a position between a vacuum probe 80 and a needle 164, both of which members are vertically reciprocable, and hence to a take-up reel 154. The apparatus may be used to place devices 100 supplied by the vacuum probe 80, which is one of several arranged around a turret indexer, on the adhesive web 146 through the openings 144, or may alternatively be used to feed devices 100 from the tape 140 to the vacuum probe 80. In the latter case the reciprocating needle 164 is used to push against the web 146 to displace the device 100 upwardly through the opening 144.
Patent GB-1295319-A (GB)
IPC: G01B3/20
Filed: 1970-05-27
Abstract: 1295319 Dial gauges TESA SA 27 May 1970 [18 June 1969] 25553/70 Heading G1M A slidable bar 9 of a calliper gauge meshes with a pinion 11 integral with a disk 12 coaxial with a gear-wheel 13 driving the pointer pinion 8. The disk 12 and gear 13 are connected together and driven through a pair of shock absorbing compression springs 16 located by end stops 18 movable in recesses 14, 15. In Fig.4 (not shown) the springs are tension springs and are of different shape and one spring tightens whilst the other relaxes.
Patent GB-1295945-A (GB)
IPC: A23G9/32
Filed: 1970-02-05
Abstract: 1295945 Gelatin soft ice cream APAW SA 5 Feb 1970 [8 Feb 1969] 5547/70 Heading A2B A gelatin soft ice cream is prepared by heating a gelatin-containing ice cream mix to above its melting point, and thereafter feeding it into the freezing chamber of a soft ice cream making machine where it is mixed with air. A suitable machine comprises a liquid mix tank having means, preferably thermostatically controlled, for heating a gelatin solution contained therein, a freezing chamber, means for feeding liquid from the mix tank to the freezing chamber, and means for mixing air with the mix in the freezing chamber.
Patent GB-1296807-A (GB)
IPC: F26B13/12
Filed: 1971-06-29
Abstract: 1296807 Photo-electric speed monitoring KATSURAGAWA DENKI K K 29 June 1971 [30 June 1970] 30305/71 Heading G1A [Also in Division G2] Belts 12 feed copy sheets (not shown) past electric heaters 10, the sheets rotating a disc 15 connected to a control system which deenergizes the heaters if the copy sheet speed falls  below a certain value. As shown, disc 15 rotates a perforated disc 16 which is located between a light source 18 and a photo-transistor 19 (or alternatively a CdS element). As long as the sheets travel at sufficient speed, the pulses produced by the arrangement 17, 18, 19 keep a relay RL2 energized which closes a switch S4 in the power supply circuit of heaters 10.
Patent GB-1297362-A (GB)
IPC: C07C53/128
Filed: 1970-01-29
Abstract: 1297362 Neo-carboxylic acids and esters BRITISH PETROLEUM CO Ltd 19 April 1971 [29 Jan 1970] 4249/70 Heading C2C A neo-carboxylic acid or ester of the formula wherein R<SP>1</SP> is hydrogen or (C 1 -C 20 ) alkyl R<SP>2</SP> and R<SP>3</SP> are (C 1 -C 10 ) alkyl and R<SP>4</SP> is hydrogen, alkyl, aryl, aralkyl or alkaryl containing up to 12 carbon atoms, or an alkali metal, is prepared by reacting an olefin of the formula with a reducible transition metal salt (defined) of an acid of formula in the presence of a compound of formula Suitable transition metals are Mn, Co, Fe, Cu, Ce and Re, particularly manganic isobutyrate. The reaction is preferably carried out above 100‹ C. in the presence of excess of the latter compound. Examples describe the preparation of 2,2-dimethyl decanoic acid.
Patent GB-1303075-A (GB)
IPC: F24C15/16
Filed: 1970-04-14
Abstract: 1303075 Pyrolitic oven cleaning; oven linings RADIATION Ltd 19 April 1971 [14 April 1970] 17735/70 Heading F4W In a heat cleaned cooling oven having an oxidant or a catalyst incorporated in the surface coating of a lining panel or panels, the coated panels are such that they can be used with either of two zones uppermost, so that uneven cleaning produced by the temperature distribution within the oven may be corrected. Side panels, or a removable side and back liner are shaped so that they may be turned upside down and replaced in the reversed position. Side panels with strips 9 in the shelf runners 8 are formed in two parts 6, 7 the relative position of the parts being interchanged to complete cleaning. A door liner panel or a back panel may be reversible or formed in two interchangeable parts. The interchangeable upper and lower parts of the panels may be separated by a fixed panel part.